I'm assuming you mean non-vascular plants, since that is the case.. the answer is rhizoids.
Non-vascular plants have rhizoids that anchor them to the ground AND absorb water and minerals.
Ans.
HD (Huntington's disease) is a genetic neurological disorder that occurs due to damage and death of brain cells. it is caused by an autosomal dominant mutation in HTT (huntingtin) gene, having a trinucleotide repeat section that makes HTT protein.
The mutation leads to an increase in this nucleotide repeat count, associated with formation of altered or mutated huntingtin protein. These altered proteins show deleterious affect on brain cells and result in Huntington's disease.
Thus, the correct answer is 'option A). a mutated gene.'
The answer is C because C represent plants and plants produce oxygen and absorb CO2
